Stabilized zirconium dioxide compositions and oxygen sensors utilizing said compositions
US4183798A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1978 |
| Grant date | Jan 15, 1980 |
| Priority date | — |
| Expiry date | Mar 20, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/486
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Stabilized zirconium dioxide compositions sintered with a silicate flux and stabilized with (i) calcium oxide and (ii) magnesium oxide. The stabilized zirconium dioxide can be sintered at temperatures between 1460.degree. C. and 1480.degree. C. to form solids having high mechanical strength and a specific resistance of 1M.OMEGA.cm at a low temperature. The invention also provides oxygen sensors containing at least one measuring cell which is an oxygen concentration cell having two electrodes separated by and in ionic communication through a solid stabilized zirconium dioxide electrolyte which is prepared from the said compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.